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For a wave propagating in air filled rectangular waveguide. | |
A. | guide wavelength is never less than free space wavelength. [Correct Answer] |
B. | wave impedance is never less than the free space impedance [Wrong Answer] |
C. | TEM mode is possible if the dimension of the waveguide are properly chosen. [Wrong Answer] |
D. | propagation constant is a real quantity. [Wrong Answer] |